Images

Stalactites at the entrance to the natural entrance of Carlsbad Caverns.

A view of Carlsbad Caverns' natural entrance from the interior of the cave.

Carlsbad Caverns has numerous speleothems, or cave formations. These formations in this image are stalagmites and are located near the natural entrance of the cave. 

A cholla cactus with yellow fruit

A panorama image of the natural entrance to Carlsbad Caverns.

A cholla cactus with yellow fruit

Prickly Pear Cacti at the entrance of Carlsbad Caverns.

Carlsbad Caverns has numerous speleothems, or cave formations. This formation is known as the Whale's Mouth.

Amistad National Recreation Area includes the Amistad Reservoir, a man-made lake along the Texas and Mexico border. It is fed by the Rio Grande, Devils River, and the Pecos River, among others.

An image of walls in the Caverns of Sonora. At the top of the image can be seen a form of flowstone known as draperies. At the base of the walls is a formation known as "cave popcorn."

Cave columns in the Caverns of Sonora. Columns form when stalactites and stalagmites fuse together. These columns then grew a series of bulbous formations known as "cave popcorn."

A detail image of "cave popcorn," a bulbous cave formation.

A cave wall showing several cave formations, or speleothems. The larger formations at the bottom formed submerged in water, whereas the smaller formations at the top were exposed to air when they formed.

Amistad National Recreation Area includes the Amistad Reservoir, a man-made lake along the Texas and Mexico border. It is fed by the Rio Grande, Devils River, and the Pecos River, among others.

A series of cave columns in the Caverns of Sonora. Cave columns occur when stalactites and stalagmites fuse together. These columns then grew a series of cave formations, or speleothems, known as "cave popcorn."

Amistad National Recreation Area includes the Amistad Reservoir, a man-made lake along the Texas and Mexico border. It is fed by the Rio Grande, Devils River, and the Pecos River, among others.

Amistad National Recreation Area includes the Amistad Reservoir, a man-made lake along the Texas and Mexico border. It is fed by the Rio Grande, Devils River, and the Pecos River, among others.

Amistad National Recreation Area includes the Amistad Reservoir, a man-made lake along the Texas and Mexico border. It is fed by the Rio Grande, Devils River, and the Pecos River, among others.

Amistad National Recreation Area includes the Amistad Reservoir, a man-made lake along the Texas and Mexico border. It is fed by the Rio Grande, Devils River, and the Pecos River, among others.

Amistad National Recreation Area includes the Amistad Reservoir, a man-made lake along the border of Texas and Mexico. This view is of the cliffs of Diablo East.

Amistad National Recreation Area includes the Amistad Reservoir, a man-made lake along the border of Texas and Mexico. This view is of the cliffs of Diablo East.